Has it really been five years since our favorite Teen Mom couple made the gut-wrenching decision to give their daughter Carly up for adoption? Tyler Baltierra and Catelynn Lowell knew they weren't in a place where they could give her the life they dreamed for her, so they gave the most precious gift of a family to adoptive parents Teresa and Brandon Davis.

Five years later, the reality TV stars both tweeted birthday wishes to their little girl, whom they still have a relationship with thanks to an open adoption. Ty and Catelynn get to see her about once a year; plus, they get frequent email and phone contact.

Ugh -- that "miss her" hashtag kills! Even though they know they made the right decision for them and have total peace about it, it doesn't mean they don't miss her every day.

Time may have flown by these last five years, but Catelynn and Tyler have done a lot of growing up. They own a home, they have stable jobs, they've been together 10 years now, and they're not in high school anymore.

Although it's unconfirmed by the couple themselves, rumor has it thatCatelynn is pregnant again -- and the timing couldn't be more perfect. They'll always miss Carly, but hopefully soon they'll have another child they'll get to raise on their own, now that they're ready.